Which company owns MAC address prefix FC:B9:48?

MAC address prefix FC:B9:48 is registered to McScience Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:B9:48 has a network interface built by McScience Inc..

What is the OUI FC:B9:48?

FC:B9:48 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to McScience Inc.. It covers every address from FC:B9:48:00:00:00 to FC:B9:48:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-B9-48.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:B9:48:00:00:00 that is FC:B9:48 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is McScience Inc. located?

McScience Inc. is listed at B-1102, Digital Empire Bldg. 1556-16 Deogyeong Blvd., Yeongtong Suwon KR 16690 in the IEEE OUI registry entry for FC:B9:48. This is the address the organization registered with the IEEE, which may differ from its current operating address.

McScience Inc.

MAC address prefix FC:B9:48 is registered to McScience Inc. in the IEEE OUI registry. Any device whose MAC address begins with FC:B9:48 has a network interface built by McScience Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from FC:B9:48:00:00:00 to FC:B9:48:FF:FF:FF.

OUI prefix: FC:B9:48
Hyphen form: FC-B9-48
MAC range: FC:B9:48:00:00:00 – FC:B9:48:FF:FF:FF
Addresses in block: 16,777,216
Organization: McScience Inc.
Address: B-1102, Digital Empire Bldg. 1556-16 Deogyeong Blvd., Yeongtong Suwon KR 16690
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-06-20Assigned to "McScience Inc."
archived source →
2026-07-17Assigned to "McScience Inc."

Nearby in the registry

The prefixes assigned immediately before and after FC:B9:48:

FAQ

Which company owns MAC address prefix FC:B9:48?: MAC address prefix FC:B9:48 is registered to McScience Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:B9:48 has a network interface built by McScience Inc..
What is the OUI FC:B9:48?: FC:B9:48 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to McScience Inc.. It covers every address from FC:B9:48:00:00:00 to FC:B9:48:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-B9-48.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:B9:48:00:00:00 that is FC:B9:48 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is McScience Inc. located?: McScience Inc. is listed at B-1102, Digital Empire Bldg. 1556-16 Deogyeong Blvd., Yeongtong Suwon KR 16690 in the IEEE OUI registry entry for FC:B9:48. This is the address the organization registered with the IEEE, which may differ from its current operating address.